A novel design of a high-temperature pressurized solar air receiver for power generation via combined Brayton–Rankine cycles is proposed. It consists of an annular reticulate porous ceramic (RPC) bounded by two concentric cylinders. The inner cylinder, which serves as the solar absorber, has a cavity-type configuration and a small aperture for the access of concentrated solar radiation. Absorbed heat is transferred by conduction, radiation, and convection to the pressurized air flowing across the RPC. A 2D steady-state energy conservation equation coupling the three modes of heat transfer is formulated and solved by the finite volume technique and by applying the Rosseland diffusion, , and Monte Carlo radiation methods. Key results include the temperature distribution and thermal efficiency as a function of the geometrical and operational parameters. For a solar concentration ratio of 3000 suns, the outlet air temperature reaches at 10 bars, yielding a thermal efficiency of 78%.
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December 2009
Research Papers
Heat Transfer Analysis of a Novel Pressurized Air Receiver for Concentrated Solar Power via Combined Cycles
I. Hischier,
I. Hischier
Department of Mechanical and Process Engineering,
ETH Zurich
, Zurich 8092, Switzerland
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D. Hess,
D. Hess
Department of Mechanical and Process Engineering,
ETH Zurich
, Zurich 8092, Switzerland
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W. Lipiński,
W. Lipiński
Department of Mechanical Engineering,
University of Minnesota
, Minneapolis, MN 55455
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M. Modest,
M. Modest
School of Engineering,
University of California
, Merced, CA 95343
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A. Steinfeld
A. Steinfeld
Department of Mechanical and Process Engineering,
e-mail: aldo.steinfeld@ethz.ch
ETH Zurich
, Zurich 8092, Switzerland; Solar Technology Laboratory, Paul Scherrer Institute
, Villigen 5232, Switzerland
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I. Hischier
Department of Mechanical and Process Engineering,
ETH Zurich
, Zurich 8092, Switzerland
D. Hess
Department of Mechanical and Process Engineering,
ETH Zurich
, Zurich 8092, Switzerland
W. Lipiński
Department of Mechanical Engineering,
University of Minnesota
, Minneapolis, MN 55455
M. Modest
School of Engineering,
University of California
, Merced, CA 95343
A. Steinfeld
Department of Mechanical and Process Engineering,
ETH Zurich
, Zurich 8092, Switzerland; Solar Technology Laboratory, Paul Scherrer Institute
, Villigen 5232, Switzerlande-mail: aldo.steinfeld@ethz.ch
J. Thermal Sci. Eng. Appl. Dec 2009, 1(4): 041002 (6 pages)
Published Online: May 19, 2010
Article history
Received:
May 15, 2009
Revised:
November 19, 2009
Online:
May 19, 2010
Published:
May 19, 2010
Citation
Hischier, I., Hess, D., Lipiński, W., Modest, M., and Steinfeld, A. (May 19, 2010). "Heat Transfer Analysis of a Novel Pressurized Air Receiver for Concentrated Solar Power via Combined Cycles." ASME. J. Thermal Sci. Eng. Appl. December 2009; 1(4): 041002. https://doi.org/10.1115/1.4001259
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